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A338898 as a simple table

na(n)
11
21
31
42
52
62
71
83
91
104
112
123
132
144
151
165
173
183
191
206
212
225
231
247
253
264
271
288
292
306
311
329
334
344
352
367
373
385
392
408
411
4210
431
4411
453
466
472
489
491
5012
514
525
531
5413
553
567
571
5814
592
6010
614
626
632
6411
651
6615
673
688
691
7016
712
7212
733
749
751
7617
774
787
795
805
811
8218
832

[1,1,1,2,2,2,1,3,1,4,2,3,2,4,1,5,3,3,1,6,2,5,1,7,
 3,4,1,8,2,6,1,9,4,4,2,7,3,5,2,8,1,10,1,11,3,6,2,9,
 1,12,4,5,1,13,3,7,1,14,2,10,4,6,2,11,1,15,3,8,1,
 16,2,12,3,9,1,17,4,7,5,5,1,18,2]